Air permeable cushioning structure

ABSTRACT

An air permeable cushioning structure contains: a first elastic layer, a second elastic layer, and a third elastic layer. The first elastic layer has plural first plastic threads irregularly wound therein, a wound connection portion of any two first plastic threads is melted together, and a disconnection portion of any two first plastic threads has a first pore formed thereon. The second elastic layer has plural second plastic threads irregularly wound therein, a wound connection portion of any two second plastic threads is melted together, and a disconnection portion of any two second plastic threads has a second pore formed thereon. The third elastic layer has plural third plastic threads irregularly wound therein, a wound connection portion of any two third plastic threads is melted together, and a disconnection portion of any two third plastic threads has a third pore formed thereon.

FIELD OF THE INVENTION

The present invention relates to an air permeable cushioning structure which is flexibly adjusted its elasticity by changing densities and thicknesses of a first elastic layer, a second elastic layer, and a third elastic layer thereof.

BACKGROUND OF THE INVENTION

A conventional bed mattress contains a plurality of springs and plant fibers arranged in a surface layer and a bottom layer thereof to provide elasticity and support capacity. However, the plurality of springs will be fatigued to reduce the elasticity of the bed mattress, after a long period of using time. Furthermore, a conventional seat cushion contains foam layer formed therein, but the foam layer has poor air permeability.

An EVA elastic cushioning structure is disclosed in TW Utility Model No. M418610 and contains a body in which ceramic materials are mixed with a plurality of hollow plastic straps, and the plurality of hollow plastic straps are wound together, thus releasing far infrared rays with spectrum wavelength of 4 to 6 um. Nevertheless, elasticity of the EVA elastic cushioning structure is fixed.

An air permeable cushioning structure is disclosed in TW Utility Model No. M338006 and at least contains a support layer and a surface cloth layer. The support layer has plural fiber strips wound and pressed therein, and the surface cloth layer is covered on the support layer and has plural air pores defined thereon. However, density of the support layer is fixed, thus causing poor air permeability.

The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide an air permeable cushioning structure which is flexibly adjusted its elasticity by changing densities and thicknesses of a first elastic layer, a second elastic layer, and a third elastic layer thereof.

To obtain the above objective, an air permeable cushioning structure contains: a first elastic layer, a second elastic layer below the first elastic layer, and a third elastic layer below the second elastic layer.

The first elastic layer has plural first plastic threads irregularly wound therein, a wound connection portion of any two first plastic threads is melted together, and a disconnection portion of any two first plastic threads has a first pore formed thereon. The second elastic layer has plural second plastic threads irregularly wound therein, a wound connection portion of any two second plastic threads is melted together, and a disconnection portion of any two second plastic threads has a second pore formed thereon. The third elastic layer has plural third plastic threads irregularly wound therein, a wound connection portion of any two third plastic threads is melted together, and a disconnection portion of any two third plastic threads has a third pore formed thereon.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view showing the assembly of an air permeable cushioning structure according to a preferred embodiment of the present invention.

FIG. 2 is a plan view showing the assembly of the air permeable cushioning structure according to the preferred embodiment of the present invention.

FIG. 3 is a cross-sectional perspective view showing the assembly of the air permeable cushioning structure according to the preferred embodiment of the present invention.

FIG. 4 is a perspective view showing the application of the air permeable cushioning structure according to the preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to FIGS. 1 and 2, an air permeable cushioning structure according to a preferred embodiment of the present invention comprises an elastic body 10, and the elastic body 10 includes: a first elastic layer 11, a second elastic layer 12 below the first elastic layer 11, and a third elastic layer 13 below the second elastic layer 12.

The first elastic layer 11 has plural first plastic threads irregularly wound therein, wherein a wound connection portion of any two first plastic threads is melted together, and a disconnection portion of any two first plastic threads has a first pore formed thereon; wherein the plural first plastic threads are hot molded from plastic material in a mold, and then the plastic material are cooled, cut, and trimmed to produce the plural first plastic threads. It is to be noted that as winding the plural first plastic threads together, a winding tightness of the plural first plastic threads is adjusted at different elasticity coefficients, wherein a density and a thickness of the first elastic layer 11 are low to obtain using comfort, for example, the density of the first elastic layer 11 is 30 to 80 kg/m³, and the thickness of the first elastic layer 11 is 5 to 100 mm, after test and verification.

The second elastic layer 12 has plural second plastic threads irregularly wound therein, wherein a wound connection portion of any two second plastic threads is melted together, and a disconnection portion of any two second plastic threads has a second pore formed thereon. As winding the plural second plastic threads together, a winding tightness of the plural second plastic threads is adjusted at different elasticity coefficients, wherein a density and a thickness of the second elastic layer 12 are higher than those of the first elastic layer 11. For example, the density of the second elastic layer 12 is 30 to 100 kg/m³, and the thickness of the second elastic layer 12 is 30 to 200 mm, after test and verification.

The third elastic layer 13 has plural third plastic threads irregularly wound therein, wherein a wound connection portion of any two third plastic threads is melted together, and a disconnection portion of any two third plastic threads has a third pore formed thereon. As winding the plural third plastic threads together, a winding tightness of the plural third plastic threads is adjusted at different elasticity coefficients, wherein a density and a thickness of the third elastic layer 13 are determined based on using requirements. For instance, the density of the third elastic layer 13 is 40 to 100 kg/m³, and the thickness of the third elastic layer 13 is 30 to 200 mm, after test and verification.

Thereby, elasticity of the air permeable cushioning structure is adjusted flexibly by changing densities and thicknesses of the first elastic layer, the second elastic layer, and the third elastic layer.

As shown in FIG. 3, the air permeable cushioning structure is applicable for a bed mattress. As illustrated in FIG. 4, the air permeable cushioning structure is applicable for any one of chair cushion, seat cushion, and protective equipment.

While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention. 

What is claimed is:
 1. An air permeable cushioning structure comprising: a first elastic layer having plural first plastic threads irregularly wound therein, wherein a wound connection portion of any two first plastic threads is melted together, and a disconnection portion of any two first plastic threads has a first pore formed thereon; a second elastic layer having plural second plastic threads irregularly wound therein, wherein a wound connection portion of any two second plastic threads is melted together, and a disconnection portion of any two second plastic threads has a second pore formed thereon; a third elastic layer having plural third plastic threads irregularly wound therein, wherein a wound connection portion of any two third plastic threads is melted together, and a disconnection portion of any two third plastic threads has a third pore formed thereon.
 2. The air permeable cushioning structure as claimed in claim 1, wherein a density of the first elastic layer is 30 to 80 kg/and a thickness of the first elastic layer is 5 to 100 mm.
 3. The air permeable cushioning structure as claimed in claim 1, wherein a density of the second elastic layer is 30 to 100 kg/m³, and a thickness of the second elastic layer is 30 to 200 mm.
 4. The air permeable cushioning structure as claimed in claim 1, wherein a density of the third elastic layer is 40 to 100 kg/m³, and a thickness of the third elastic layer is 30 to 200 mm. 